1964682145 has 4 divisors (see below), whose sum is σ = 2357618580. Its totient is φ = 1571745712.

The previous prime is 1964682131. The next prime is 1964682151. The reversal of 1964682145 is 5412864691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412864691 = 13 ⋅416374207.

It can be written as a sum of positive squares in 2 ways, for example, as 452327824 + 1512354321 = 21268^2 + 38889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964682145 - 2¹⁵ = 1964649377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1964682095 and 1964682104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196468210 + ... + 196468219.

It is an arithmetic number, because the mean of its divisors is an integer number (589404645).

Almost surely, 2^1964682145 is an apocalyptic number.

It is an amenable number.

1964682145 is a deficient number, since it is larger than the sum of its proper divisors (392936435).

1964682145 is an equidigital number, since it uses as much as digits as its factorization.

1964682145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392936434.

The product of its digits is 414720, while the sum is 46.

The square root of 1964682145 is about 44324.7351373925. The cubic root of 1964682145 is about 1252.4606771426.

The spelling of 1964682145 in words is "one billion, nine hundred sixty-four million, six hundred eighty-two thousand, one hundred forty-five".